1. Barcelona Centre for International Health Research (CRESIB, Hospital Clínic – Universitat de Barcelona), Barcelona, Spain
2. End-of-Life Care Research Group, Vrije Universiteit Brussel, Brussels, Belgium
3. King’s College London, Department of Palliative Care, Policy and Rehabilitation, School of Medicine at Guy’s, King’s and St Thomas’ Hospitals, London, UK
4. Barcelona Centre for International Health Research (CRESIB, Hospital Clínic – Universitat de Barcelona), Barcelona, Spain; Centre for Global Health and Inequality, University of Amsterdam, Amsterdam, Netherlands
5. Barcelona Centre for International Health Research (CRESIB, Hospital Clínic – Universitat de Barcelona), Barcelona, Spain; King’s College London, Department of Palliative Care, Policy and Rehabilitation, School of Medicine at Guy’s, King’s and St Thomas’ Hospitals, London, UK